<template>
  <div>
    <div class="search">
      <input
        v-model="keyword"
        class="search-input"
        type="text"
        placeholder="输入城市名或拼音"
      />
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li
          class="search-item border-bottom "
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{ item.name }}
        </li>
        <li class="search-item border-bottom " v-show="hasNodata">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll";
import {mapState,mapMutations} from 'vuex';
export default {
  name: "CitySearch",
  props: {
    cities: Object
  },
  data() {
    return {
      keyword: "",
      list: [],
      timer: null
    };
  },
     methods:{
        handleCityClick(city){
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
  computed: {
    hasNodata() {
      return !this.list.length;
    }
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (!this.keyword) {
        this.list = [];
        return;
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.cities) {
          this.cities[i].forEach(value => {
            if (
              value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1
            ) {
              result.push(value);
            }
          });
        }
        this.list = result;
      }, 100);
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.search);
  }
};
</script>

<style lang="stylus" scoped>
 @import '~styles/varibles.styl'
 .search
    padding:0 .1rem
    height:0.72rem
    background:$bgColor
    .search-input
        box-sizing :border-box
        width:100%
        height:.62rem
        padding:0 .1rem
        line-height:.62rem
        text-align:center
        border-radius :0.06rem
        color:#666
.search-content
    z-index:1
    overflow:hidden
    position:absolute
    top:1.58rem
    left:0
    right:0
    bottom:0
    background:#eee
.search-item
    line-height:0.62rem
    padding-left:0.2rem
    background:#fff
    color:#666
</style>
